On Wed, Jul 24, 2024 at 02:19:51PM +0100, Hibby via wsjt-devel wrote:

> Identity and keysigning is a solved problem 

True.

What is required here is a public-key signature scheme.
The fox produces a key pair and publishes the public key
which is then used by the hounds.

The problem is that all public-key signature schemes I know
of produce quite long signatures, and you can't truncate them
(accepting the reduced security) as you could when using a
symmetric key scheme.

For example the detached public-key signatures provided by
libsodium are 64 bytes, probably way too long for a fox message.

So this will require some research, and the first question is
how many signature bits could be accomodated in a fox message.

Ciao,

-- 
FA



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